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Severe, 6 weeks977Projects326

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OracleCVE-2026-83378

Oracle Java SE: unauthenticated attacker could compromise Oracle Java SE

Oracle

CVE-2026-83378 · Published Oct 20, 2026 · updated Oct 27, 2026

Medium4.8
No fix yet
Oracle advisory

Vulnerability in Oracle Java SE (component: Compiler). Supported versions that are affected are Oracle Java SE: 21.0.12.1, 25.0.4.1 and 27. Difficult to exploit vulnerability allows unauthenticated attacker with network access via multiple protocols to compromise Oracle Java SE. Successful attacks of this vulnerability can result in unauthorized update, insert or delete access to some of Oracle Java SE accessible data as well as unauthorized read access to a subset of Oracle Java SE accessible data. Note: This vulnerability can only be exploited by supplying data to APIs in the specified Component without using Untrusted Java Web Start applications or Untrusted Java applets, such as through a web service. CVSS 3.1 Base Score 4.8 (Confidentiality and Integrity impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N).

Affected versions

PackageAffectedFixed in
Oracle Java SE
Product
<= 21.0.12.1No fix yet
<= 25.0.4.1No fix yet
<= 27No fix yet
Details and references
CVSS 3.1
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N
Severity from
the vendor (its own CVE record or advisory)
Weakness
CWE-284

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